In the third week of our British Formula 1 legends series, this week's AUTOSPORT magazine focuses on triple world champion Jackie Stewart - guest edited by David Coulthard. Plus there's an exclusive interview with Paul di Resta

Is three-time world champion Sir Jackie Stewart the most influential world champion in Formula 1 history? There's certainly a strong case to be made for such an assertion. His tireless – and, at the time, unpopular – campaign to improve safety almost certainly saved the lives of drivers, officials and spectators.

And that's before you factor in his 27 wins, 17 pole positions, 15 fastest laps, 360 points and three titles from just 99 starts.

In the third of our tributes to British F1 legends - edited by 13-time grand prix winner David Coulthard - Paul Fearnley examines what might have been the impact on the sport had Stewart followed his other passion, shooting – a discipline at which he was good enough to represent his country at Olympic level.

We also relive Stewart's rivalry with Brazilian hero Emerson Fittipaldi, with whom he fought for the title in his final year, 1973. Edd Straw talks to both men about their fights and enduring friendship.

Finally, we go under the skin of the Matra MS80, the car in which JYS took the first of his three titles in 1969.

Mark Hughes column - Our grand prix editor examines the paranoia associated with F1 teams as they scramble to uncover the next trick to replace double diffusers and f-ducts.

Paul di Resta interview - On the back of a superb rookie Formula 1 season in 2011, the Scot tells Mark Glendenning that he's fired-up ahead of his sophomore season, particularly with increased backing for the team and the arrival of highly rated fellow second-year racer Nico Hulkenberg.

AUTOSPORT International highlights - All the highlights from the world's best racing-car show in an 11-page special from Birmingham’s NEC.